Ferromagnetism in van der Waals Compound MnSb1.8Bi0.2Te4

Published

June 11, 2020

Author(s)

Yangyang Chen, Ya-Wen Chuang, Seng Huat Lee, Yanglin Zhu, Kevin Honz, Yingdong Guan, Yu Wang, Ke Wang, Zhiqiang Mao, Jun Zhu, Colin A. Heikes, Patrick Quarterman, P. Zajdel, Julie Borchers, William D. Ratcliff

Abstract

The intersection of topology and magnetism represent a new playground to discover novel quantum phenomena and new device concepts. In this work, we show that a van der Waals compound MnSb_1.8 Bi_0.2Te₄ exhibits a ferromagnetic ground state with a Curie temperature of 26 K, in contrast to the antiferromagnetic order previously found for other members of the Mn(Sb, Bi)₂Te₄ family. We employ magneto-transport, bulk magnetization and neutron scattering studies to illustrate the magnetic and electrical properties of MnSb_1.8 Bi_0.2Te₄ and report on the observation of an unusual anomalous Hall effect. Our results are an important step in the synthesis and understanding of ferromagnetic topological insulators.

Citation

Physical Review Materials

Volume

4

Issue

6

Pub Type

Journals

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Keywords

topological, magnetism, neutron

Citation

Chen, Y. , Chuang, Y. , Lee, S. , Zhu, Y. , Honz, K. , Guan, Y. , Wang, Y. , Wang, K. , Mao, Z. , Zhu, J. , Heikes, C. , Quarterman, P. , Zajdel, P. , Borchers, J. and Ratcliff, W. (2020), Ferromagnetism in van der Waals Compound MnSb_1.8Bi_0.2Te₄, Physical Review Materials, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=929125 (Accessed April 19, 2024)